Dental jaw-brace



(No Mode l.)

r L. W. NEVIUS.

DENTAL JAW BRAGE. No. 278,259. I Patented May 22,1883;

w tneozrea: I Inventor.

2 AIMAm mm M VIM", a a

PATE T OFFICE.

LAIRD W. NEVIUS, OF TOLEDO, OHIO.

DENTAL JAW-BRACE.

SPECIFICATION forming part of Letters Patent No. 278,259, dated May 22, 1883.

Application filed April 14, 1883. (No model.)

To all whom it may concern:

Be it known that I, LAIRD W. NEVIUS, a citizen of the United States, residing at Toledo, in the county of Lucas and State of Ohio, have invented anew and useful Improvement in Dental Jaw-Braces, of which the following is a specification.

The object of my invention is to providean effective and convenient jawbrace, which when placed between the upper and lower front teeth will securely retain thejaws in an open position, and at the same allow the greatest possible room for the free use of the instrument in the hands of the operator. Ia-ccomplish this by swiveling the headed extremities upon which the teeth rest to a curved or crank-shaped standard, thus securing through the rotary movement of the standard a reversible jaw-brace, capable of being turned from side to side without removing it from the mouth or displacing the heads or tips from their position between the teeth. be more readily understood by reference to the drawings, which form a part of the specification.

Figure 1 represents my jaw-brace with its reversible standard and the headed extremities swiveled thereon. Fig. 2 shows-the curved or crank-shaped standard with shoulders at the base of its necks or pins, upon which the headed extremities are swiveled Fig. 3 is a sectional view of one of the headed extremities, showing the socket in which the neck or pin of the standard turns. Fig. 4 represents the brace as applied to the jaws to retain the mouth in anropenfposition.

In Fig. 1, lis the standard, and 2 2 the headed extremities thereon.

In Fig. 2, 1 is the standard; 3 3, the shoulders providing a firm bearing for the headed extremities, and 4 4 the necks or pins upon which the heads are swiveled.

This will In Fig. 3,2 is the head; and 5 the socket through its center, in which the neck or pin of the standard turns.

It will be seen that the objection to the old form of standard in a direct line with the extremities is removed by the use of my device. The curved standard, with its swiveled heads, can be reversed in an instant, thus securing, without removing the brace from the month, more room to facilitate the work of the operator than would be possible with a jaw-brace having a straight standard between its ends or heads.

In the construction of my brace, the headed extremities may be made of metal, hard rubber, celluloid, or other material best calculated to secure strength, durability, and cleanliness in the brace. I

The outer face of the heads or tips may be slightly grooved or indented, so as to hold the teeth securely and prevent the brace from being displaced when in position.

The heads may be swiveled orpivoted upon the standard in any approved manner, either by a pin at the base of the head entering a socket in the shoulder of the standard, or by the neck of the standard entering a socket in the heads of the brace.

What Iclaim as my invention, and desire to secure by Letters Patent of the United States,

isj 1. In ajaw-brace, a crank-shaped standard supporting headed extremities, as set forth" and described.

2. In a jaw-brace, a curved standard, with swiveled heads, having grooved or indented faces arranged and combined substantially as and for the purposes set forth.

LAIRD W. NEVIUS.

Witnesses E. W. ToLEsToN, J. R. B.RANSOM. 

